Tension thread-guide



S. S- PICARD.

TENSION THREAD GUIDE.

APPLICATION man AUG. 1a. 1919.

1,330,817. Patented Feb. 17,1920.

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TENSION THREAD GUIDE.

APPLICATION FILED AUG. 18, 1919. 1,330,817. Patented Feb. 17,1920.

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STANISLAS S. PICARD, OF PROVIDENCE, RHODE ISLAND.

TENSION THREAD-GUIDE.

Specification of Letters Patent. Patented Feb, 17 192() Application filed August 18, 1919. Serial No. 318,139.

To all whom it may concern:

Be it known that I, STANISLAsS. PIOARD, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Tension Thread- Guides, of which the following is a specification.

This invention relates to certain new and useful improvements in tension thread guides and pertains more particularly to guides of this type for use in connection with bob-bin carriers for braiding machines.

The primary object of the invention is to provide means to tension the yarn, which means upon engagement with a knot or obstruction that may occur in the yarn, will be automatically disengaged to release the yarn following arresting of the latter by the knot or obstruction engaging the tension ing means. A further object of the invention is to provide a structure wherein the Weight of the bobbin and yarn is carried centrally with the driving point or bearing of the carrier in the race ways of the machine, thus permitting an increase in the speed of operation.

In the drawings.

Figure 1, is a vertical sectional view of the invention, the carrier being shown in side elevation;

Fig. 2, is a detail view, in end elevation, of the tensioning device;

Fig. 3, is a sectional view on line 3-3 of Fig. 2'showing the presser foot in inoperative position;

Fig. 4, is a sectional view on line 4-4 of Fig. 1; and

Fig. 5, is a sectional view on line 5-5 of Fig. 2.

In proceeding in accordance with the present invention the base of the carrier which comprises the parts 1, 2 and 3, may be of various forms depending upon the structure of the braider in which the carriers are used, the present invention being for use with various forms of braiders.

Mounted on top of the carrier is a tube 4 which is in suitable rigid connection with the part 3. The tube 4 carries the bobbin 5.

Disposed within the tube 4 are upper and lower collars 6 and 7 carried the ends of a tube 8 arranged within tube 4. These collars 6 and 7 may be a tight frictional fit within tube 4 or same may rotate in tube 4, for the purpose of enabling use of the device in different machines, such as ones having a rather light tension or heavy. tension.

A horizontal bed 9 is rigidly carried by the upper end of tube 8 and has ears 10 to which a longitudinally slotted presser foot 11 is pivoted at 12 and tensioned by a spring 13. A vertical bifurcated guide 4 receives the presser foot 11 and extends upwardly from the bed 9 and has a preferably porce lain guide eye 15 on its upper end.

The bed 9 further carries a depending arm :25 provided with an upper curved guide eye 16 and with one or more lower guide eyes 16', all of the guide eyes being preferably porcelain.

Arranged within the tube 8 is a vertically movable thread engaging wheel 17 mounted on a slide 18, the latter tensioned by a light spring 19 which is secured to the slide and to the tube 8. A pin 20 extends outwardly from the slide 18 and is adapted to enter a lateral slot 21 formed as an extension at the upper end of a longitudinal slot 20- in which the pin 20 operates.

In operation, the thread or yarn passes from the bobbin through one of the eyes 16,'through eye 16, under the presser foot 11, down and under the wheel 17, thence upwardly and through the slot of the presser foot and then through eye 15 t0 the working point. Should a knot or other obstruction occur in the yarn or thread when it reaches the free end of the presser foot, it will be arrested thereby, and as the yarn or thread is being taken up in the act of braiding, the wheel 17 will be gradually lifted against the action of the spring 19,

until it reaches the presser foot and upon engagement with the latter lifts the same and thus automatically releases the yarn whereupon the spring 19 retracts and restores the wheel and its slide to normal tension position. The thread or yarn is consequently effectively tensioned while automatica'lly releasing the yarn should a knot or obstruction occur in the latter. threading, the pin 20 of the slide is moved into the lateral slot 21 where it is held whereupon the thread is passed under the wheel and up through the slot of the presser foot and thence through eye 15.

In cases where the tube 8 is loosely held in the tube 4, the bobbin or spool can be frictionally held to the tube 4 of the carrier whereupon the arm 25 will rotate around the bobbin and the thread properly delivered. This is of special advantage in cases where small braid work is made in which a very light or fine number of thread or yarn is used.

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent is 1. In a tension thread guide, a carrier having a tube extending upwardly therefrom, a tube within the first tube, a horizontal bed on the .upper end of the second tube extending outwardly therefrom, a slotted spring pressed presser 1. foot carried by the bed and cooperating therewith, a bifurcated guide extending upwardly from the bed and receiving the presser foot, a guide eye on the ,upper'end of the guide, an arm depending from the bed and having an upper curved guide eye and a lower guide eye, and

a spring tensioned roller bearing slide in the second tube engageable with the presserfootto lift same up from the bed upon engagement therewith, said second tube hav- 'ing a longitudinal slot with a lateral extension, and the slide having a pin engageable in the slot and in the extension to hold the slide locked against the action of its spring. I 2. In a tension thread guide, a carrier, a tube carried by the carrier and 'to which the bobbin is connected, a bed carried by a second tube, a spring pressed presser foot cooperating with the bed, means toguide the thread from the bobbin onto the bed and beneath the foot, and a spring tensioned rollerwithin the second tube and beneath which the threadpasses, said roller being engageable with the foot upon lifting thereof by the thread following arresting of the movement of the thread by an obstruction in the latter engaging the foot; 7

v3J-In a thread tension guide, a bobbin support, abed on which the thread rests, vertically movable thread engaging means, and a tensioned presser member movably carried by the support to engage on top of the" thread to press the latter downwardly onto the bed, said presser' member and the movable thread engaging means being arranged and related so that the latter will engage the presser member and raise same to releasethe thread.

a. In a thread tension guide, a tubular bobbin support, a horizontal element borne by the top of the support, thread guiding means borne by one end of the element and located exteriorly of the support, liftable means borne by the other end of the element and arranged above the latter to press the 'top of the thread to press same down-' wardly onto said part, said thread engaging means in the support being vengageable with the'pressermember to lift the latter up and release the thread; a V I 6.- }In a thread tension guide, a tubular bobbin support,'means on the support over .7

and jon top of which the thread engages,

tensioned means'engaging on top of the thread to press same downwardly onto said first means, means to. mount the tensioned means to allow same. to have vertical movement, and threadengaging means within the bobbin support engageable with the tensioned'means to raise the latter up and'release the thread. f

V 7 In, a thread tension guide, a tubular; bobbin support, a'horizontal bed on thetop of the support over and on top' of which the thread engages, tensioned means engaging on top of the thread to press same downwardly onto said bed, means to mount the tensioned means on one end of "the bed to allow same to havevertical movement, thread engaging means within the support engageable with the tensionedfmeans to raise the latter up and release the thread,

means carried by the other end of the, bed to guide the thread to the first named- VHIGELIIS.

In testimony whereof I have signed my I name to this'speoification in the presence of two subscribing witnesses. I j

STANISLAS-SEPIGARD. Witnesses: J I

Bnssm P. TOONEY, J. A. MILLER. 

